Glass painting

[Elaine]

Are there any glass painters out there who could help me? Until recently I
used non bakeable paints but decided I wanted a more permanent finish. I
started using the Pebeo paints that bake at 160. I find that there are
sometimes bubbles in the paint after baking. I'm not surprised at this
because I know there are often tiny bubbles in the paint as I use it, which
I try to remove or push out to the side. I was more disappointed that the
outliner seems to bubble and this really spoils the effect. Has anyone else
found this problem or do you just live with it? Many thanks to anyone who
can help.

Elaine

--

[Jenny]

In article <39bb...@news.jakinternet.co.uk>,

Elaine,

Are you leaving the painted glass to dry/set for 24/48 hours (depending
on the thickness of the paint and outliner). The Pebeo leaflets say
that if the paint isn't dry enough bubbles will occur.

Jenny.

Sent via Deja.com http://www.deja.com/
Before you buy.

[Fruitbat]

Try thinning the paint a teeny bit more, with the correct solvent for
the paint, and leaving a lot longer to settle and dry out, before
firing. If this entails more than one coat, likely with the thicker
outliner, ensure that each is completely dry before applying subsequent
coats or attempting to bake.

Are you being too energetic with your brushes and a wee bit impatient?
And, are your brushes clean and the best quality that you can afford?
Did you prepare the surface to be completely dust-free before painting?
Failure in any of these, will create bubbles that prove impossible to
disperse.

Of these, dust is probably the most prevalent cause of unexpected
bubble-like glitches, followed by firing before completely dry.

You might also try two firings, the first being a drying-out bake at a
relatively low temperature to aid in smoothing out the finish and
preparing for a final firing; the second firing at the 160 that will
properly fix the paint. Or, a lengthier firing stage, in which you
gradually ramp up the temperature to the 160 firing temperature?

If this sounds complicated, consider that Rene Lalique would often fire
his art glass over a period of months.

The medium that he chose, meant that even a moderately large piece
needed a few months after firing, to be brought very gradually down fron
firing temperature to roon temperature; otherwise the piece would
acquire stress cracks and break-up.

I have no experience of Pebeo paints — perhaps you could contact the
manufacturers for technical advice?

--
fruitbat

[Elaine]

Thanks very much for your help Fruitbat and Jenny. I did leave the paint to
dry for about 30 hours and I was careful to clean the glass with white
spirit and make sure it was dry before I started painting. Being over
zealous with the brush could well be the answer. Any of the other things
you suggest could also be applicable so I'll give them all a try.

Thanks again

Elaine
"Fruitbat" <don...@bigfoot.com> wrote in message
news:39BCD245...@bigfoot.com...

> I have no experience of Pebeo paints - perhaps you could contact the